This article sais that some probability of explosion exist, if deiterium some how collected in the interiors of Jupiter.
“Necessary conditions for the initiation and propagation of nuclear detonation waves in plane atmospheras”.
Tomas Weaver and A. Wood, Physical review 20 – 1 Jule 1979,
This article rejected the possibility of extending the thermonuclear detonation in the Earth's atmosphere and in Earth's oceans because of balance
of the loss of radiation (one that does not exclude the possibility of reactions, which take little space: say, small deposit of heavy ice on the
ocean floor, comparing with the amount of earthly matter - but it's enough to disastrous consequences and human extinction.)
There it is said: “We, therefore, conclude that thermonuclear-detonation waves cannot propagate in the ter¬restrial ocean by any mechanism by an
astronom¬ically large margin.
It is worth noting, in conclusion, that the susceptability to thermonuclear detonation of a large body of hydrogenous material is an ex¬ceedingly
sensitive function of its isotopic com¬position, and, specifically, to the deuterium atom fraction, as is implicit in the discussion just preceding.
If, for instance, the terrestrial oceans contained deuterium at any atom fraction greater than 1:300 (instead of the actual value of 1: 6000), the
ocean could propagate an equilibrium thermonuclear-detonation wave at a temperature £2 keV (although a fantastic 1030 ergs—2 x 107 MT, or the total
amount of solar energy incident on the Earth for a two-week period—would be required to initiate such a detonation at a deuter¬ium concentration of
1: 300). Now a non-neg-ligible fraction of the matter in our own galaxy exists at temperatures much less than 300 °K, i.e., the gas-giant planets of
our stellar system, nebulas, etc. Furthermore, it is well known that thermodynamically-governed isotopic fractionation ever more strongly favors
higher relative concentration of deuterium as the temperature decreases, e.g., the D:H concentration ratio in the ~102 ? Great Nebula in Orion is
about 1:200.45 Finally, orbital velocities of matter about the galactic center of mass are of the order of 3 x 107 cm /sec at our distance from the
It is thus quite conceivable that hydrogenous matter (e.go, CH4, NH3, H2O, or just H2) rela¬tively rich in deuterium (1 at. %) could accumu¬late at
its normal, zero-pressure density in substantial thicknesses or planetary surfaces, and such layering might even be a fairly common feature of the
colder, gas-giant planets. If thereby highly enriched in deuterium (£10 at. %), thermo¬nuclear detonation of such layers could be initiated
artificially with attainable nuclear ex¬plosives. Even with deuterium atom fractions approaching 0.3 at. % (less than that observed over multiparsec
scales in Orion), however, such layers might be initiated into propagating thermo¬nuclear detonation by the impact of large (diam 102 m), ultra-high
velocity (^?? 107 cm/sec) meteors or comets originating from nearer the galactic center. Such events, though exceedingly rare, would be spectacularly
visible on distance scales of many parsecs.”
See more in
Giant planets ignition